Final answer:
After choosing the appropriate fire extinguisher, the next step is to use it by pulling the pin, aiming at the fire's base, squeezing the lever, and sweeping side to side. Safety is paramount, and one should evacuate if the fire doesn't subside or the extinguisher empties.
Step-by-step explanation:
The next step after choosing the appropriate fire extinguisher for a fire is to safely and effectively use it to extinguish the blaze. This typically involves the following steps:
- Pulling the pin to unlock the operating lever.
- Aiming the extinguisher nozzle at the base of the fire.
- Squeezing the lever slowly to discharge the extinguishing agent.
- Sweeping the nozzle from side to side, covering the area of the fire.
Remember to always keep yourself between the fire and an exit so that you have a clear escape route. Additionally, if the fire does not begin to go out immediately, or if the extinguisher becomes empty, you should leave the area at once. It's crucial to prioritize safety over trying to extinguish a fire that is too large or out of control.